1311234312 has 32 divisors (see below), whose sum is σ = 3278990880. Its totient is φ = 436957440.

The previous prime is 1311234307. The next prime is 1311234329. The reversal of 1311234312 is 2134321131.

It is a super-2 number, since 2×1311234312² = 3438670841932226688, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140512 + ... + 149552.

It is an arithmetic number, because the mean of its divisors is an integer number (102468465).

Almost surely, 2^1311234312 is an apocalyptic number.

1311234312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311234312 is an abundant number, since it is smaller than the sum of its proper divisors (1967756568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311234312 is a wasteful number, since it uses less digits than its factorization.

1311234312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093 (or 15089 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 1311234312 is about 36210.9694982059. The cubic root of 1311234312 is about 1094.5277286179.

Adding to 1311234312 its reverse (2134321131), we get a palindrome (3445555443).

It can be divided in two parts, 13112 and 34312, that multiplied together give a palindrome (449898944).

The spelling of 1311234312 in words is "one billion, three hundred eleven million, two hundred thirty-four thousand, three hundred twelve".